2. Melanin or natural hair color
2.1 Melanin structure
Hair's natural color results from the presence of a natural brown pigment, melanin, also present in the skin, eyes, brain and inner ear. Melanin is produced by melanocytes in the hair follicle. It is then transmitted to keratinocytes while the hair is forming. So, from birth, hair is colored. Although the range of natural hair colors is very broad, melanin accounts for only 1% of the hair's total composition. A melanocyte essentially produces two types of melanin: eumelanin and pheomelanin (or phaeomelanin), whose colors range from reddish-brown to deep black and from yellow to red, respectively. Their respective structures are shown in figure
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Melanin or natural hair color
Oxidative degradation of melanin
Bibliography
Websites
...Events
Perfumes and Cosmetics Congress – Regulatory issues, takes place every year in Chartres.
http://www.congres-parfumscosmetiques.com/fr/
Cosmetagora tradeshow, held every year in Paris
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Regulations
Regulation (EC) No 1223/2009 of the European Parliament and of the Council of November 30, 2009 on cosmetic products, OJ L 342, 22.12.2009, p. 59-209.
Regulation (EC) No 1272/2008 of the European Parliament and of the Council of December 16, 2008 on classification, labeling and packaging of substances and mixtures, amending and repealing Directives 67/548/EEC and 1999/45/EC, and amending Regulation...
Patents
KNUEBEL (G.), KONARD (G.), MICHEL (R.). – Process for the production of 5,6-dihydroxyindolines. US5399713A (1995).
HOEFFKES (H.), SCHUMANN (K.), NEUHAUS (W.). – Colorants. US6818023, US6537330 (2003 and 2004).
SÜNGER (G.), KOLONKO (C.). – Oxidationsfärbemittel zur Färbung keratinhaltiger Fasern mit Luftsauerstoff als einzigem Oxidationsmittel. DE102007056934A1 (2007)....
Directory
Cosmetic Valley, the world's leading perfumery and cosmetics network
http://www.cosmetic-valley.com/
FEBEA, trade association for the cosmetics industry
Cosmed, an association created on the initiative...
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